Ball-bearing.



L. HERRMANN.

BALL BEARING.

urmonron FILED MAR. 20, 1908.

Patented Oct. 13, 1908.

B SHEETS-SHEET 1.

1;: re nlar L. mm.

BALL BEARING; APPLIOATION FILED MAB. 20 1908.

Patented 001:. 13,1908.

2 8KEET8-SHBET 2.

- /alnesses [Ewan for Nu. 901,1e9.

LUDWIG HERRMANN, OF NUREM-BERG, GERMANY.

KEALL-BEABING.

Specification Letters Patent.

Patented Oct. 13, 1908.

Application filed larch 20, 1908. Serial No. 432,288.

lb all whom it may concern:

Be it known that I, LUDWIG 'HERRMANN, German subject, residing at N o. 46 Galgenhofstrasse, Nuremberg, Germany, have invented new and useful Improvements in Ball-.Bearin'gs, of which. the following is a specification.

The subject of my "invention is aball-bearing in which the one main bearing-part resents a rid e or knife-edge" resting 1n a sa dle' constituted by two adjacent, or mutually engaging, rows of balls, in such manner that the balls, forced against the walls of the race presented by the other main bearing-part, turn on axes located at right-angles and radially to, the main axis.

The new bearing enables easier running, with less wear and tear of the parts.

Various forms of construction of my invention are illustrated 'in the accompanying drawings, in which Figure .1 is a vertical sectioniof a bearing with, ad'acent, but not mutually e aging,- rows of 25 alls. Fig. 2 is a section on t e line AA of Fig. I, seen in the direction of the arrow (Fig. 1). 3 is a: plan of Fig. 1. Fig. 4, is a vertical section of a modification, in which the ballrows mutually. e c. Fig. 5 is a section on the line B-'B of Fig. 4,, seen in the direction of the arrow (Fig. 4).

. Fig. 6 is a plan of Fig. 4. Fig. 7 is a vertical section of a further modification with'mutually engaging rows of balls.

Referring more particularly to Fi s. 13, the bearing consists of the two parts e, containing the balls 0, the part (1 b'ein' here shown integral with the shaft Whi e the art e is secured to the latter by a screw 0.

presents a e outer ring f ofthe beari we e-shaped 'ri e j, which ts into the 88d 0 constitute by the two adjacent rows of balls a,so that the latter are forced against the walls 'ofthe race presented" by the bearing-parts d, '.e. grooves in the parts (i, e, and the menslons of the different parts of the hearing, are suit ably selected,.the balls a, when the ring frotates, willnot, as ordinaril in ball-bearings, be caused to turn on axes ying' parallel with the main axis, but on axes which are directed at right-angles and radial] to the mam'axis. Thus each so arate row 0 balls moves in its race-groove hke the ball in the race ofa ball thrust-bearing, the load on the balls in the Y i g l' f directionof the axis being caused by the Provided the a les of the ing friction, since the balls, turning in counter-directions, mutually roll upon each other! The bearing shown in Figs. 4-6 works solel with rolling friction in this manner. In t 's modification the bearing consists,

like that illustrated in Figs. 1-3, of two parts 11 e,- connected by means of the shaft 6 and screw c, and presenting race-grooves on the. opposing faces to receive the balls 0. The latter are staggeredrelatively to each other, so that there are two rows of balls formed, the individual balls of which two rows mutually contact, owing to the balls of one row 1 ingin the s aces between theballs of the otii er row. .T us any given balloontacts with two balls of the adjacent row. i As in the first do :zribed construction, the does not pres ii) a race-groove to receive t e balls as customarily, but has a wedge-shaped ridge j which rests in the saddle constituted by the double row of balls (1. The ridge f thus tends to force the .two ball-rows apart, so that they are pressed in the direction of the axis into the race-grooves in the parts d, e, the balls turni' as before, on axes which are directed at rig t-angles to the main axis, andthus radially outward.

; The modification shown in Fig. 7 dares from that just described only in so far that the two parts of the composite inner ring (1, s ate screwed together at h. Having thus described my invention, I de clare that What I claim as new 'is:-

1. A ball bearing comprising three parts,

two of which are each provided. with a race wall and race, tworows of balls located in'said race and fa iingja sad dle between the rows of "balls, each row of balls being separated from the other, a bearin arthaving a knife edge entering said sadd e etween the two rows-of balls and en aging the same, each race wall of the two' rst mentioned parts roviding two bearing surfaces forits row of alls, the knife edge of the last mentioned bearing part roviding bearing surfaces for both rows of alls near the inner edge of saidknife ed e, the said two bearin race walls and the,

. V caring surfaceson the knife edge being. disposed relatively to the.

surfaces in each of t eaxis of the main bearing in such manner that the said balls turn on axes lying at right angles to the main axis of the bearln 2. A ball bearing comprising time parts, two of which are each provided with a race wall and race, a row of balls arranged in each race, an outer bearing part having a knife edge engaging both rows of balls, each ball race providing two bearing surfaces for its row of balls, the knife edge of said outer bearsing part 'rovidi'ng a bearing surface for both rows of b lls near the inner edge of said knife edge, the said bearing surfaces in each race wall and on the knife edge being disposed relatively to the main axis of the bearing in 15 such manner that the balls turn on axes lying at right angles to the main axis of the bear- %n witness whereof I have hereunto signed my name this 6th day of March 1908, in the g presence of two subscribing witnesses.

LUDWIG HERRMANN.

Witnesses OSCAR Bocx, WrLHELM HERRMANN, 

